Senators Work Into Weekend on Ukraine and Israel Bill as G.O.P. Slows Progress

The long-stalled emergency national security package to send aid to Ukraine and Israel is back on track in the Senate and headed toward passage within days — but not before Republican senators try to take a few partisan shots at the legislation.

The senators are slowing progress on the $95 billion measure as they seek votes on proposed revisions, particularly concerning border security — despite having voted this week to kill a version of the bill that included a bipartisan deal to crack down on immigration.

The demands amount to an exercise in political face-saving. Republicans said for months that they would never approve funds to help Ukraine fight off a Russian invasion without simultaneously taking significant steps to secure the U.S. border with Mexico. But their decision to kill a proposal to do just that means the aid will move forward without immigration restrictions.

Now, they are settling for staging a series of votes that aim to show the right-wing Republican base, the G.O.P.-led House and former President Donald J. Trump that they tried to muscle through tough new border policies — and blame Democrats for blocking them.

Senators planned a rare weekend session to work through the bill, with a critical vote on the legislation expected Sunday.

“Democrats are willing to consider reasonable and fair amendments here on the floor,” Senator Chuck Schumer, Democrat of New York and the majority leader, said on Friday.